JPS6143754Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a discharge amount control device that controls the discharge amount so that a fixed amount of granular materials such as grains can be taken out from a hopper in which granular materials such as grains are stored.

The discharge port of the hopper is equipped with a small amount discharge shutter that partially closes the discharge port and a complete closure shutter that completely closes the discharge port, and when the discharge amount approaches a predetermined amount, the small amount discharge shutter is activated. The hopper discharge amount control device is designed to accurately discharge a predetermined amount of granular material by switching to a small amount of granular material to be discharged, and when a predetermined weight is reached, a complete closing shutter is activated to stop the discharge. Are known. In this discharge amount control device, when discharging a small amount, the particulate matter is passed through the opening of the shutter for discharging a small amount and is discharged, so compared to a structure in which a single shutter discharges a small amount by changing the opening degree of the discharge port. , it has the advantage of being able to accurately determine the amount of discharge when discharging a small amount. However, this discharge amount control device has the disadvantage of a complicated structure because it requires two shutter actuators to operate the small discharge shutter and the complete closure shutter, respectively.

This invention is designed to solve the above-mentioned inconveniences and is constructed as follows. That is, at the discharge port 2 position of the hopper 1, there is an opening 3 narrower than the discharge port 2.
The inner shutter 4 is provided with an inner shutter 4 formed with a closing part 5 for closing the opening 3, and the inner shutter 4 is provided with an inner locking piece 7 that protrudes laterally, and the outer shutter 4 is provided with an inner locking piece 7 that protrudes laterally. 6 is provided with an inner locking piece 9 in which a locking portion 8 is formed at a larger protruding position in the same direction as this inner locking piece 7, and an inner locking piece 9 is provided on the protruding side of these inner and outer locking pieces 7 and 9. 7 and outer locking piece 9
A locking tool 10 is provided that swings between locking positions A and B, respectively, and the discharge port 2 is configured to be in three states: fully open, partially open, and completely closed, using inner and outer shutters 4 and 6. .

This invention has the following technical effects due to the above-mentioned configuration. That is, in order to completely open the discharge port 2 in order to discharge a large amount, the inner locking piece 7 of the inner shutter 4 is locked with the locking tool 10 located at this locking position A, but when the discharge amount is When the amount reaches about 90%, by moving the locking tool 10 to the locking position B with the outer locking piece 9 of the outer shutter 6,
At the same time as the inner shutter 4 is released, the outer shutter 6 is locked, and the discharge port 2 is closed with the inner shutter 4. Then, the particulate matter in the hopper 1 is discharged little by little from the opening 3 of the inner shutter 4. When the discharge amount reaches a predetermined amount, by moving the locking tool 10 again to the locking position A of the inner locking piece 7, the lock of the outer shutter 6 is released and the opening of the inner shutter 4 is opened. 2 is closed with the closing part 5 of the outer shutter 6. In this way, by swinging one locking tool 10 between the locking position A with the inner locking piece 7 and the locking position B with the outer locking piece 9, the discharge port 2 can be fully opened. Since it is possible to partially open and completely close the locking device 10, the movement of the inner and outer shutters 4 and 6 can be controlled with a single device such as a solenoid for operating the locking tool 10, and the structure is simple and can be manufactured at low cost.

Next, one embodiment of this invention will be described with reference to the drawings. The hopper 1 stores granular materials such as grains, and has a discharge port 2 facing downward. A support shaft 12 is provided on a bracket 11 fixed to the side wall of the hopper 1 near the discharge port 2, and an inner shutter 4 and an outer shutter 6 are pivotally connected to this support shaft.
These inner and outer shutters 4, 6 are rotated by their own weight to a position where the discharge port 2 is closed.

On the surface of the inner shutter 4 that closes the discharge port 2,
Openings 3, 3 narrower than the opening area of the discharge port 2 are formed, and an adjusting plate 13 for adjusting the degree of opening of the openings 3, 3 is attached with screws 14. The adjustment plate 13 has openings 15, 15 formed at positions corresponding to the openings 3, 3, and the degree of overlap between the openings 3, 3 of the inner shutter 4 and the openings 15, 15 of the adjustment plate 13 is controlled. The width of the passage communicating with the discharge port 2 is adjusted. Further, a locking piece 7 is provided on the inner shutter 4 so as to protrude toward the outer shutter 6 side, and an overlapped portion 16 with the outer shutter 6 is formed at the upper end. Further, a handle 17 is fixed to the support shaft 12 side of the inner shutter 4.

A cutout hole 18 is formed in the outer shutter 6 to allow the inner locking piece 7 of the inner shutter 4 to pass through, and a cutout hole 18 is formed in the upper end.
An outer locking piece 9 is provided to protrude long in the same direction as the inner locking piece 7. A wide notch passage 19 through which a locking tool 10 (to be described later) passes is formed on the side of the attachment base of the outer locking piece 9 to the outer shutter 6, and is locked at a position protruding laterally than the inner locking piece 7. A locking portion 8 with the tool 10 is formed. Further, the outer shutter 6 is formed with an overlapped portion 20 that overlaps the overlapped portion 16 of the inner shutter 4.

Reference numeral 21 denotes an enclosing frame surrounding the inner and outer shutters 4 and 6, and an elastic body 22 such as a rubber plate is attached at a position where the end surfaces of the inner and outer shutters 4 and 6 come into contact.

Reference numeral 23 denotes a solenoid, which is attached to the side wall of the hopper 1 via a bracket 24. The solenoid 23 normally has an operating rod 25 that protrudes and is retracted when energized. A locking tool 10 is pivotally attached to a bracket 24 at an intermediate portion between the inner and outer shutters 4, 6 and the solenoid 23. This locking tool 10 is connected to an operating rod 25 of a solenoid 23 via a connecting rod 26, and swings when the solenoid 23 is operated.

Next, the operating state of this embodiment will be explained. First, as shown in FIG. 1, with the inner and outer shutters 4 and 6 opening the discharge port 2, the inner locking piece 7 of the inner shutter 4 is locked to the locking tool 10, and the granules are discharged from the hopper 1. A container with a measuring device is installed below the discharge port 2, and the granular material is stored in the container. When the amount of particles in the container reaches approximately 90% of the predetermined amount, the solenoid 23 is energized to activate the locking tool 10. Then, as shown in FIG. 2, the inner shutter 4 rotates to the discharge port 2 position, and the locking piece 9 of the outer shutter 6
engages with the locking tool 10. In this state, particulate matter is discharged little by little from the opening 3 of the inner shutter 4. When the granules are stored in the container to a predetermined amount, the solenoid 23 is de-energized and the locking tool 10 is moved to the discharge port 2 side. Then, as shown in Figure 3,
The outer shutter 6 also rotates toward the discharge port 2 side, closes the opening 3 of the inner shutter 4 with the closing part 5, and completely stops the discharge of particulate matter.

To return the state shown in Fig. 3 to the state shown in Fig. 1, all you have to do is press the handle of the inner shutter 4 downward.
The inner and outer shutters 4 and 6 rotate, and the inner locking piece 7 is locked with the locking tool 10.

[Brief explanation of the drawing]

The figure shows one embodiment of this invention.
Figures 3 to 3 are front views showing cross-sections of parts in different operating states, and Figure 4 is a perspective view of one member.
FIG. 5 is a perspective view of a different member from FIG. 4. 1... hopper, 2... discharge port, 3... opening, 4... inner shutter, 5... closing part, 6...
Outer shutter, 7... Inner locking piece, 8... Locking part,
9... Outer locking piece, 10... Locking tool.

Claims (1)

[Scope of utility model registration request] At the position of the discharge port 2 of the hopper 1, an inner shutter 4 having an opening 3 narrower than the discharge port 2 and an outer shutter 6 having a closing portion 5 for closing the opening 3 are provided overlapping each other. 4 is provided with an inner locking piece 7 that projects laterally, and the outer shutter 6 is provided with an inner locking piece 9 that has a locking portion 8 formed at a position that protrudes more greatly in the same direction as the inner locking piece 7. A locking tool 10 is provided on the protruding side of the inner and outer locking pieces 7 and 9 to swing between locking positions A and B of the inner locking piece 7 and outer locking piece 9, respectively. Exit 2
The hopper discharge amount control device is configured to control the hopper into three states: fully open, partially opened, and completely closed, using inner and outer shutters 4 and 6.